Devices helpers

Today, any manufactured device can be supplemented, adapted to the specific household needs of Amateur radio and give the device a seemingly non-core second life.

 

For example, a widespread audible alarm, the appearance of which is shown in the photo, has excellent opportunities at low cost and small size.

Bee venom — a valuable and irreplaceable raw material for many drugs — get different. For example, when using the device “Jadwiga”. It takes on a special frame-dosborne placed in the hive, annoying the electric impulses that cause bees to defend. Jala frame, winged healer leave on her own, fast crystallizing venom (see “Mo-delist-Konstruktor” No. 12’92 6’99).

The development of purpose, verbal stimulation initiative attitude to improve the health and addictions… assistance in the development of these and other qualities will have the device, protected by patent of Russian Federation № 2109523. The design is presented to the readers.

For portrait and other special types of shots using the flash it is often necessary to illuminate objects from different angles, but Standard… “blitz” the desired effect, alas, does not.

We offer homemade device allows you to turn on sync one camera not one, but two flashes (ФВ1, ФВ2), and this is achieved by operating lighting captured on film objects.

When learning to play a musical instrument to set the tempo often use a mechanical or electronic metronome. Last and I made one of the most popular modern developments. However, during operation it was found that this device is inferior to its mechanical counterpart, with adjustable pendulum, knob, jiggle measured which are perceived as the movement of the baton of the conductor.

Currently, widespread electronic TRAVEL CLOCK and similar clock with a miniature buzzer as sound source — a reminder about the occurrence of the deadline. However, a small volume of the regular signal, as shown, are often not sufficient in order to Wake up, for example, soundly sleeping man.

Offer favorite journal I developed a system of automatic watering and spraying plants, well-proven both in the room and in the greenhouse, Conservatory and flower garden. It includes two interrelated processes: “sensor — water” (Fig. 1) and automatic electronic control (Fig. 2). And if the first is easy even going to beginners, the second is better to entrust to those who have sufficient experience and knowledge in the field of electrical and radio engineering.

In the process of creating Amateur designs may require tools and equipment that are available it is often difficult. In such cases, comes to the aid of ingenuity, and craftsmen are doing everything they can with their hands. We will talk about how you can make a real recorder-thermoregulator from the old electrocardiograph type ЭК1Т-03M (Fig. 1).

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Owners of digital multimeters offer to acquire a homemade console that will allow you to convert the popular M-830 M-832 and their counterparts in the universal devices, capable to become a reliable assistant and service vehicles. In particular, it will be possible (along with the already mastered many of the health check of the relay-regulator, a current measurement battery power and other electrical parameters on-Board network) to quickly estimate the important performance of the ignition system carburetor of the engine, as the crankshaft rotation and angle, open (easily converted into a corner closed) status breaker contacts.